[xor_null]

As far as i know ubuntu uses Gnome which means you should use GTK to let your app look nativ. I dont know how it will look if you use Qt.

[beojan]

QGtkStyle and the Gnome platform theme mean this isn't really an issue.

[kelnos]

In practice, though, I can nearly always tell when a new app I install uses Qt. It always seems a little off, and some little details end up not feeling right. If you use GNOME or Xfce and are starting a GUI project, it's better to just stick with GTK.

[kitsunesoba]

I just wish Qt supported headerbars... it’s really the only thing that GTK has that Qt doesn’t, and they complement many app designs very nicely.